Constify irep members.

- `pool`
- `syms`
- `reps`

include/mruby/debug.h

@@ -46,7 +46,7 @@ typedef struct mrb_irep_debug_info {
  * get line from irep's debug info and program counter
  * @return returns NULL if not found
  */
-MRB_API const char *mrb_debug_get_filename(mrb_state *mrb, mrb_irep *irep, ptrdiff_t pc);
+MRB_API const char *mrb_debug_get_filename(mrb_state *mrb, const mrb_irep *irep, ptrdiff_t pc);
 
 /*
  * get line from irep's debug info and program counter

include/mruby/dump.h

@@ -18,10 +18,10 @@ MRB_BEGIN_DECL
 
 #define DUMP_DEBUG_INFO 1
 
-int mrb_dump_irep(mrb_state *mrb, mrb_irep *irep, uint8_t flags, uint8_t **bin, size_t *bin_size);
+int mrb_dump_irep(mrb_state *mrb, const mrb_irep *irep, uint8_t flags, uint8_t **bin, size_t *bin_size);
 #ifndef MRB_DISABLE_STDIO
-int mrb_dump_irep_binary(mrb_state*, mrb_irep*, uint8_t, FILE*);
-int mrb_dump_irep_cfunc(mrb_state *mrb, mrb_irep*, uint8_t flags, FILE *f, const char *initname);
+int mrb_dump_irep_binary(mrb_state*, const mrb_irep*, uint8_t, FILE*);
+int mrb_dump_irep_cfunc(mrb_state *mrb, const mrb_irep*, uint8_t flags, FILE *f, const char *initname);
 mrb_irep *mrb_read_irep_file(mrb_state*, FILE*);
 MRB_API mrb_value mrb_load_irep_file(mrb_state*,FILE*);
 MRB_API mrb_value mrb_load_irep_file_cxt(mrb_state*, FILE*, mrbc_context*);

include/mruby/irep.h

@@ -33,11 +33,11 @@ typedef struct mrb_irep {
   uint8_t flags;
 
   const mrb_code *iseq;
-  mrb_value *pool;
-  mrb_sym *syms;
-  struct mrb_irep **reps;
+  const mrb_value *pool;
+  const mrb_sym *syms;
+  const struct mrb_irep **reps;
 
-  struct mrb_locals *lv;
+  const struct mrb_locals *lv;
   /* debug info */
   struct mrb_irep_debug_info* debug_info;
 
@@ -46,6 +46,7 @@ typedef struct mrb_irep {
 } mrb_irep;
 
 #define MRB_ISEQ_NO_FREE 1
+#define MRB_IREP_NO_FREE 2
 
 MRB_API mrb_irep *mrb_add_irep(mrb_state *mrb);
 

include/mruby/proc.h

@@ -41,7 +41,7 @@ void mrb_env_unshare(mrb_state*, struct REnv*);
 struct RProc {
   MRB_OBJECT_HEADER;
   union {
-    mrb_irep *irep;
+    const mrb_irep *irep;
     mrb_func_t func;
   } body;
   struct RProc *upper;
@@ -86,8 +86,8 @@ struct RProc {
 
 #define mrb_proc_ptr(v)    ((struct RProc*)(mrb_ptr(v)))
 
-struct RProc *mrb_proc_new(mrb_state*, mrb_irep*);
-struct RProc *mrb_closure_new(mrb_state*, mrb_irep*);
+struct RProc *mrb_proc_new(mrb_state*, const mrb_irep*);
+struct RProc *mrb_closure_new(mrb_state*, const mrb_irep*);
 MRB_API struct RProc *mrb_proc_new_cfunc(mrb_state*, mrb_func_t);
 MRB_API struct RProc *mrb_closure_new_cfunc(mrb_state *mrb, mrb_func_t func, int nlocals);
 void mrb_proc_copy(struct RProc *a, struct RProc *b);